Welk getal ontbreekt t/m 40?

Aftrekken

Oefening 1
1.	21	-		=	12
2.	39	-		=	23
3.	31	-		=	0
4.	3	-		=	2
5.	29	-		=	1
6.	36	-		=	6
7.	11	-		=	8
8.	38	-		=	30
9.	22	-		=	5
10.	31	-		=	28

Oefening 2
1.	17	-		=	14
2.	22	-		=	0
3.	30	-		=	18
4.	32	-		=	29
5.	29	-		=	13
6.	7	-		=	2
7.	30	-		=	19
8.	10	-		=	4
9.	36	-		=	26
10.	22	-		=	13

Oefening 3
1.	33	-		=	2
2.	12	-		=	11
3.	18	-		=	5
4.	32	-		=	31
5.	20	-		=	4
6.	39	-		=	27
7.	20	-		=	13
8.	38	-		=	34
9.	37	-		=	10
10.	23	-		=	9

Oefening 4
1.	24	-		=	21
2.	15	-		=	0
3.	29	-		=	19
4.	15	-		=	12
5.	22	-		=	18
6.	27	-		=	16
7.	28	-		=	8
8.	34	-		=	22
9.	30	-		=	15
10.	15	-		=	5

Welk getal ontbreekt t/m 40?
| ANTWOORDEN

Aftrekken

Oefening 1
1.	21	-	9	=	12
2.	39	-	16	=	23
3.	31	-	31	=	0
4.	3	-	1	=	2
5.	29	-	28	=	1
6.	36	-	30	=	6
7.	11	-	3	=	8
8.	38	-	8	=	30
9.	22	-	17	=	5
10.	31	-	3	=	28

Oefening 2
1.	17	-	3	=	14
2.	22	-	22	=	0
3.	30	-	12	=	18
4.	32	-	3	=	29
5.	29	-	16	=	13
6.	7	-	5	=	2
7.	30	-	11	=	19
8.	10	-	6	=	4
9.	36	-	10	=	26
10.	22	-	9	=	13

Oefening 3
1.	33	-	31	=	2
2.	12	-	1	=	11
3.	18	-	13	=	5
4.	32	-	1	=	31
5.	20	-	16	=	4
6.	39	-	12	=	27
7.	20	-	7	=	13
8.	38	-	4	=	34
9.	37	-	27	=	10
10.	23	-	14	=	9

Oefening 4
1.	24	-	3	=	21
2.	15	-	15	=	0
3.	29	-	10	=	19
4.	15	-	3	=	12
5.	22	-	4	=	18
6.	27	-	11	=	16
7.	28	-	20	=	8
8.	34	-	12	=	22
9.	30	-	15	=	15
10.	15	-	10	=	5